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Thirty children aged 6\u201314 years with clinically diagnosed traumatic oral ulcers were randomly allocated into three groups (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200910 each): Group I (LLLT), Group II (LC), and Group III (CHX). Ulcer size was measured using a calibrated periodontal probe, pain intensity was assessed with the Visual Analogue Scale (VAS) and parental satisfaction was evaluated using a Likert scale. Ulcer size reduction was greatest in Group I, followed by Group II and Group III, with statistically significant differences observed at day 5 (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.0001) and day 7 (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.0072). Group I also recorded the lowest VAS scores immediately, and at 2, 5, and 7 days (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.0001) compared with the other groups. Parental satisfaction was significantly higher in the LLLT group compared with the LC and CHX groups (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.006). LLLT demonstrated superior effectiveness in accelerating healing by reducing related size and pain in traumatic oral ulcers compared with LC gel and CHX mouthwash. Despite CHX being the standard approach for oral ulcer management, it showed the lowest efficacy. Parental acceptance of LLLT was high, with minimal discomfort related to treatment visits, supporting its potential as a favourable treatment modality in paediatric dental practice.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Trial registration:<\/jats:bold>\n                    On August 16, 2025, this study was retrospectively registered on ClinicalTrials.gov under the identification number NCT07138586 with URL;\n                    <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"https:\/\/clinicaltrials.gov\/study\/NCT07138586\" ext-link-type=\"uri\">https:\/\/clinicaltrials.gov\/study\/NCT07138586<\/jats:ext-link>\n                    .\n                  <\/jats:p>","DOI":"10.1038\/s41598-025-34529-8","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T15:26:51Z","timestamp":1769527611000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Evaluation of low level laser therapy and lidocaine versus chlorohexidine for the management of traumatic oral ulcers in children: a randomized controlled study"],"prefix":"10.1038","volume":"16","clinical-trial-number":[{"clinical-trial-number":"nct07138586","registry":"10.18810\/clinical-trials-gov"}],"author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5395-1710","authenticated-orcid":false,"given":"Maryam El","family":"Mansy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0254-5971","authenticated-orcid":false,"given":"Mohamed Farouk","family":"Rashed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,27]]},"reference":[{"issue":"4","key":"34529_CR1","doi-asserted-by":"publisher","first-page":"456","DOI":"10.1111\/j.1365-2230.2009.03220.x","volume":"34","author":"M Munoz-Corcuera","year":"2009","unstructured":"Munoz-Corcuera, M. et al. 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